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skrzyp |
# {{{ Banner
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# ============================================================================
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#
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# console.tcl
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#
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# Console output support for the eCos synthetic target I/O auxiliary
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#
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# ============================================================================
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# ####ECOSHOSTGPLCOPYRIGHTBEGIN####
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# -------------------------------------------
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# This file is part of the eCos host tools.
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# Copyright (C) 2002 Free Software Foundation, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 or (at your option) any
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# later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin Street,
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# Fifth Floor, Boston, MA 02110-1301, USA.
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# -------------------------------------------
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# ####ECOSHOSTGPLCOPYRIGHTEND####
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# ============================================================================
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# #####DESCRIPTIONBEGIN####
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#
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# Author(s): bartv
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# Contact(s): bartv
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# Date: 2002/08/07
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# Version: 0.01
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# Description:
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# Implementation of the console device. This script should only ever
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# be run from inside the ecosynth auxiliary.
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#
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# ####DESCRIPTIONEND####
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# ============================================================================
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# }}}
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# The console device is pretty simple. There can only ever be one
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# instance of the console, and it does not take any initialization
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# data from the target or from command-line arguments. It does
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# look for entries in the target definition file, to set up
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# colours for console output, and to install additional regexp-based
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# filters. The only type of request that can go to the console device
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# is to write some text.
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namespace eval ::console {
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variable _pending_output ""
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variable filter_count 0
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array set filters [list]
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proc instantiate { id name data } {
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# There is only console so no name is expected, and the target
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# cannot provide any initialization data.
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if { ("" != $name) || ("" != $data) } {
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synth::report_error "The target has passed invalid data when instantiating the console device.\n"
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return ""
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}
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# There are no command line arguments to be processed and consumed.
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# Look for and consume target definition entries related to the console.
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# These are only actually applicable when running in GUI mode, but
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# should always be consumed.
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set console_appearance ""
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if { [synth::tdf_has_device "console"] } {
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if { [synth::tdf_has_option "console" "appearance"] } {
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set console_appearance [synth::tdf_get_option "console" "appearance"]
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}
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if { [synth::tdf_has_option "console" "filter"] } {
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set tdf_filters [synth::tdf_get_options "console" "filter"]
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foreach filter $tdf_filters {
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if { 2 > [llength $filter] } {
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set msg "Invalid entry in target definition file $synth::target_definition\n"
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append msg " Device console, option filter takes at least two arguments, a name and a regular expression.\n"
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synth::report_error $msg
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} else {
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# Attempt some minimal validation of the regexp
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set name [lindex $filter 0]
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set regexp [lindex $filter 1]
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set error ""
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if { [catch { regexp -- $regexp "Hello world\n" } error] } {
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set msg "Invalid entry in target definition file $synth::target_definition\n"
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append msg " Device console, filter $name, invalid regular expression\n $error\n"
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synth::report_error $msg
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} else {
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set ::console::filters($::console::filter_count,name) $name
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set ::console::filters($::console::filter_count,regexp) $regexp
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set ::console::filters($::console::filter_count,appearance) [lrange $filter 2 end]
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incr ::console::filter_count
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}
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}
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}
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}
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}
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# If the GUI is enabled then set up a filter for the console, and
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# any additional filters specified in the target definition file
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# for e.g. trace output.
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if { $synth::flag_gui } {
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if { [synth::filter_exists "console" ] } {
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synth::report_warning "The console device script [info script] cannot create a filter for \"console\".\nThis filter already exists.\n"
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} elseif { "" == $console_appearance } {
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synth::filter_add "console"
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} else {
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array set parsed_options [list]
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set message ""
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if { ![synth::filter_parse_options $console_appearance parsed_options message] } {
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synth::report_error \
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"Invalid entry in target definition file $synth::target_definition\
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\n synth_device \"console\", entry \"appearance\"\n$message"
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} else {
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synth::filter_add_parsed "console" parsed_options
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}
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}
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for { set i 0 } { $i < $::console::filter_count } { incr i } {
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set name $::console::filters($i,name)
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set appearance $::console::filters($i,appearance)
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array unset parsed_options
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array set parsed_options [list]
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if { [synth::filter_exists $name] } {
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synth::report_warning "The console device script [info script] cannot create a filter for \"$name\".\nThis filter already exists.\n"
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} else {
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set message ""
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if { ![synth::filter_parse_options $appearance parsed_options message] } {
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synth::report_error \
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"Invalid entry in target definition file $synth::target_definition\
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\n synth_device \"console\", entry filter $name\n$message"
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} else {
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synth::filter_add_parsed $name parsed_options
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}
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}
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}
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}
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# An instantiation function should return a handler for further requests
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# to this device instance.
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return console::handle_request
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}
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proc handle_request { id reqcode arg1 arg2 reqdata reqlen reply_len } {
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# Unfortunately the main eCos diagnostic code assumes it is
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# talking to a tty in raw mode, since typically the output
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# will go via the gdb output window. Hence it will have inserted
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# carriage returns which are best filtered out here.
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set reqdata [string map {"\r" " "} $reqdata]
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# The output should be processed one line at a time, to make it
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# easier to write the regexp filters.
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append console::_pending_output $reqdata
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while { -1 != [string first "\n" $console::_pending_output] } {
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set regexp_matched 0
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set index [string first "\n" $console::_pending_output]
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set line [string range $console::_pending_output 0 $index]
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set ::console::_pending_output [string range $console::_pending_output [expr $index + 1] end]
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for { set i 0 } { !$regexp_matched && ($i < $console::filter_count) } { incr i } {
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if { [regexp -- $console::filters($i,regexp) $line] } {
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synth::output $line $console::filters($i,name)
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set regexp_matched 1
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}
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}
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if { ! $regexp_matched } {
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synth::output $line "console"
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}
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}
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}
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# Deal with the case where eCos has exited after sending only part
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# of a line, which is still pending. In practice this has no
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# effect at present because the data is still buffered inside
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# eCos.
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proc _flush { arg_list } {
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if { "" != $console::_pending_output } {
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synth::output "$console::_pending_output\n" "console"
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}
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}
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synth::hook_add "ecos_exit" console::_flush
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}
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return console::instantiate
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